The tomato Mi-1 gene confers resistance to both root-knot nematodes and potato aphids

Pieter Vos†,Guus Simons†,Taco Jesse, Jelle Wijbrandi,Leo Heinen,René Hogers, Adri Frijters,John Groenendijk,Paul Diergaarde,Martin Reijans, Joke Fierens-Onstenk, Michiel de Both,Johan Peleman,Tsvetana Liharska‡,Jan Hontelez, Marc Zabeau§

Nature biotechnology(1998)

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Abstract
Mi-1 , a Lycopersicon peruvianum gene conferring resistance to the agricultural pests, root-knot nematodes, and introgressed into tomato, has been cloned using a selective restriction fragment amplification based strategy. Complementation analysis of a susceptible tomato line with a 100 kb cosmid array yielded a single cosmid clone capable of conferring resistance both to the root-knot nematode Meloidogyne incognita and to an unrelated pathogen, the potato aphid Macrosiphum euphorbiae . This resistance was stable. The Mi-1 gene encodes a protein sharing structural features with the nucleotide-binding site leucine-rich repeat–containing type of plant resistance genes.
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Key words
agricultural engineering,plant biology
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